Knife holder



FIG. 1 is a perspective view of a knife holder showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof.

The drawing is shaded to indicate color contrast. 

The ornamental design for a knife holder, as shown and described. 